gtk:notebook-reorder-child (notebook child pos)

notebook -- a gtk:notebook widget
child -- a gtk:widget child page to move
pos -- an integer with the position, or -1 to move to the end

Reorders the page containing the child, so that it appears in the given position. If the position is greater than or equal to the number of children in the list or negative, the child will be moved to the end of the list.